vacuum cleaner

Abstract

To solve the problem that entangling of dust in a rotary wheel and a wheel shaft has to be maintained concerning a vacuum cleaner including the rotary wheel in a suction body.SOLUTION: A vacuum cleaner includes: wheel shafts where one end is fixed to a wall surface of a wheel storage chamber and a tip end being the other end is projected to the wheel storage chamber; rotary wheels rotatably supported by the wheel shaft; and restriction parts arranged on a side of the tip end so as to restrict the rotary wheel from coming off the tip end. Detachment of only the rotary wheel enables removal of hair and lint or the like entangled in the wheel shaft, so that maintenance is facilitated.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] This disclosure relates to an electric vacuum cleaner, and in particular to a running part of a suction body. [Background technology]

[0002] 2. Description of the Related Art Conventionally, floor suction tools that are connected to electric vacuum cleaners are provided with running wheels to allow the tools to move easily over the surface to be cleaned. For example, the floor suction tool described in Patent Document 1 has a wheel storage section formed in the lower case, openings formed on both side walls of the wheel storage section, and a recess formed adjacent to the wheel storage section, with the dimension between the side wall of one recess and the opening end on the other side larger than the wheel shaft dimension, and the dimension between the both opening ends smaller than the wheel shaft dimension, and with the wheel shaft positioned in the opening, a stopper member is placed in the recess and presses the wheel shaft toward the other recess side, thereby disclosing a floor suction tool that can easily attach a rear wheel to the suction tool body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 11-276391 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the floor suction tool described in Patent Document 1 has a problem in that it requires many steps to remove the wheels and is not easy to maintain. The present disclosure has been made to solve the above problems, and aims to provide an electric vacuum cleaner in which the wheels can be easily removed from the floor suction tool. [Means for solving the problem]

[0005] The electric vacuum cleaner disclosed herein is an electric vacuum cleaner comprising a main body incorporating an electric blower, and a suction body that sucks in dust from the surface to be cleaned by the negative pressure generated by the electric blower, wherein the suction body forms a wheel storage compartment that opens toward the surface to be cleaned, and the wheel storage compartment is provided with a cylindrical shaft having one end fixed to the wall of the wheel storage compartment and the other end, which is a tip portion, protruding into the wheel storage compartment, a rotating wheel that is inserted through the tip portion and rotatably supported on the wheel axle, ensuring a distance between the surface to be cleaned and the bottom surface of the suction body, and a regulating portion that is composed of a protrusion protruding toward the tip portion, and which is provided on the tip portion to prevent the rotating wheel from coming off the tip portion. [Effects of the Invention]

[0006] According to the present disclosure, the rotating wheel attached to the suction body can be removed simply by moving the restricting part, so that hair or threads wrapped around the rotating wheel or wheel shaft can be easily removed. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing an electric vacuum cleaner according to an embodiment. [Figure 2] FIG. 2 is a perspective view of the attracting body in the first embodiment. [Figure 3] 1 is a side view of an attracting body according to the first embodiment. [Figure 4] FIG. 2 is a rear view of the attracting body in the first embodiment. [Figure 5] FIG. 2 is a perspective view of a rotary cleaning element according to the first embodiment. [Figure 6] FIG. 3 is a detailed view of a restricting portion according to the first embodiment. [Figure 7] FIG. 3 is a cross-sectional view of a restricting portion according to the first embodiment. [Figure 8] FIG. 3 is a cross-sectional view of a restricting portion according to the first embodiment. [Figure 9] 10 is a modified example of the restricting portion in the first embodiment. [Figure 10] 10 is a modified example of the restricting portion in the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments for carrying out the present disclosure will be described with reference to the drawings. In each drawing, the same or corresponding parts are denoted by the same reference numerals. Duplicate descriptions of such parts will be appropriately simplified or omitted. Note that the present disclosure is not limited to the following embodiments and can be modified in various ways without departing from the spirit of the present disclosure.

[0009] Embodiment 1 FIG. 1 is a perspective view showing a vacuum cleaner 1 according to an embodiment.

[0010] The vacuum cleaner 1 is composed of a hose 2, a handle 3, a vacuum cleaner body 4, an extension tube 5, and a suction body 6. The vacuum cleaner 1 has an air tunnel within each structure, and is structured so that ventilation can pass through the internal air tunnel from the suction body 6, which is placed on the surface to be cleaned, through the extension tube 5, the handle 3, the hose 2, and the vacuum cleaner body 4 in that order.

[0011] The vacuum cleaner main body 4 incorporates an electric blower that generates negative pressure, a control circuit that controls the electric blower, and a dust collection filter that separates dust from the air containing dust sucked in by the negative pressure of the electric blower and collects the dust.

[0012] One end of the hose 2 is connected to the vacuum cleaner main body 4, and the other end is structured to be connectable to an extension tube 5. This structure of the hose 2 allows ventilation in the order of suction body 6, extension tube 5, hose 2, dust collection filter, and electric blower. In addition to the hose body that allows ventilation, the hose 2 also has a handle portion 3 that is held by the user. The handle portion 3 has a hand-operated operating unit 10 that is used to turn the electric blower on and off and to turn on and off a brush motor that rotates and drives a rotary cleaning body 9 arranged in the suction body 6.

[0013] Fig. 2 is a perspective view of the attracting body 6 in embodiment 1. Fig. 3 is a side view of the attracting body 6 in embodiment 1. Fig. 4 is a rear view of the attracting body 6 in embodiment 1. Note that Fig. 4 shows the right half of the attracting body 6 as seen from behind, and the left side will be described as having the same structure as the right side. The suction body 6 is a floor suction tool that has a suction port 7 that opens on the side of the surface to be cleaned and a joint part 8 that can change the angle to connect to the extension pipe 5. The suction body 6 has an air tunnel inside that allows ventilation between the suction port 7 and the extension pipe 5 at the end of the joint part 8.

[0014] The suction body 6 also includes a rotary cleaning body 9 that is rotatable within the air tunnel. Fig. 5 is a perspective view of the rotary cleaning body 9 according to the first embodiment. The rotary cleaning body 9 has a shaft 11 with multiple spiral grooves formed on its periphery, and a cleaning part 12 is embedded in the grooves. The rotary cleaning body 9 is positioned so that part of the cleaning part 12 protrudes from the suction port 7 toward the surface to be cleaned. The suction body 6 has a motor that drives the rotary cleaning body 9, and the power of the motor is transmitted to the rotary cleaning body 9 via a belt or the like, causing it to rotate in a predetermined direction.

[0015] Rotating cleaning body 9 moves cleaning part 12 in contact with the surface to be cleaned as it rotates, stirring up dust on the surface. The stirred-up dust on the surface to be cleaned is sucked into suction port 7 by the airflow generated by the electric blower, and is collected by the dust collection filter via joint 8, extension tube 5, and hose 2. Rotating rotary cleaning body 9 as described above makes it possible to remove dust from the surface to be cleaned with little force and in a short time, making cleaning easier.

[0016] The suction body 6 will now be described in more detail. The suction body 6 has an outer shell formed by an upper case 13 and a lower case 14, and has wheel storage chambers 15 formed at the rear and on both sides of the joint portion 8. The wheel storage chamber 15 has a room-like structure that is open at least on the bottom side of the suction body 6, and is equipped with the rotating wheels 17, wheel axles 18, and restricting parts 23 described below inside. The wheel storage chamber 15 also has openings at the top and back, allowing the user to visually confirm the presence of the rotating wheels 17 installed inside the wheel storage chamber 15 while cleaning.

[0017] The rotating wheels 17 are formed into a wheel shape from a material that is unlikely to scratch the surface to be cleaned. The rotating wheels 17 are rotatably supported by wheel axles 18 inserted into an axial hole formed in the center of the cylinder, and are provided in a position where a portion of the wheel protrudes from the bottom surface of the suction body 6. The rotating wheels 17 rotate during cleaning operation, facilitating the movement of the suction body 6 in the front-to-rear direction, improving the operability of the suction body 6 and preventing scratches on the surface to be cleaned due to friction.

[0018] One end of the wheel axle 18 is fixed to the side wall of the wheel storage chamber 15, and the rotating wheel 17 can be inserted from the other end. The side of the wheel axle 18 that is fixed to the wheel storage chamber 15 is called the fixed portion 19, and the tip of the axle that is open on the other end is called the tip portion 20. In other words, the wheel axle 18 is an axle that is inserted into the axle hole of the rotating wheel 17 from the tip portion 20 side, and supports the rotating wheel 17 so that it can rotate.

[0019] Here, the suction body 6 is attracted to the surface to be cleaned by the negative pressure generated by the electric blower, but the presence of the rotating wheels 17 allows a certain gap to be formed between the suction body 6 and the surface to be cleaned, and the rotation of the rotating wheels 17 facilitates forward and backward movement. However, because the rotating wheels 17 rotate while being pressed against the surface to be cleaned, as described above, they may pick up hair or lint that is on the surface to be cleaned. The picked-up hair or lint may then become tangled in the rotating wheels 17 or the wheel shaft 18.

[0020] The restricting portion 23 has a protrusion 22 that protrudes close to the tip 20 of the wheel axle 18. The protrusion 22 is normally located close to the tip 20 of the wheel axle 18, but is structured so that when the user applies force, it moves to a position where a gap is created between the protrusion 22 and the wheel axle 18. By configuring the restricting portion 23 in this way, it restricts the rotating wheel 17 from coming off the tip 20 of the wheel axle 18 during cleaning. In other words, the restricting portion 23 is positioned in a position that restricts the rotating wheel 17 from slipping out of the tip 20 of the wheel axle 18 under normal conditions, and when the user applies force, a gap is formed between the tip 20 and the rotating wheel 17, allowing it to be removed from the wheel axle 18.

[0021] Fig. 6 is a detailed view of the restricting portion 23 in the embodiment 1. Figs. 7 and 8 are cross-sectional views of the restricting portion 23 in the embodiment 1.

[0022] The restricting portion 23 is composed of an expanding portion 21 formed of an expanding member such as a spring, and a protruding portion 22. The expansion and contraction portion 21 is formed of an expansion and contraction member such as a spring that is built into the protrusion 22 , and is added so as to push the protrusion 22 toward the tip end 20 of the wheel axle 18 . The protrusion 22 has a cylindrical shape with one end closed and a hollow interior, and the hollow interior houses the extension / retraction section 21. The protrusion 22 is installed so that it protrudes toward the tip 20 of the wheel axle 18 from outside the wall surface of the wheel storage chamber 15 to which the wheel axle 18 is fixed. The protrusion 22 has a cylindrical shape that is larger than the shaft diameter of the wheel axle 18 and the axle hole of the rotating wheel 17. 7, in the normal state, the spring force of the extendable portion 21 pushes the protrusion 22 toward the wheel axle 18, and the restricting portion 23 is held in a position close to the tip 20. Therefore, the restricting portion 23 restricts the rotating wheel 17 from moving in a direction away from the tip 20 of the wheel axle 18. By being configured in this way, the restricting portion 23 prevents the rotating wheel 17 from unintentionally falling off the wheel axle 18 during cleaning work.

[0023] In addition, when a force is applied in the direction of compressing the expansion / contraction portion 21, the regulating portion 23 is structured so that the protrusion 22 moves in a direction away from the wheel axle 18, creating a gap between the tip 20 of the wheel axle 18 and the protrusion 22 that is greater than the thickness of the rotating wheel 17. With this configuration, the user can release the restriction on the movement of the rotating wheel 17 and remove it from the wheel axle 18 simply by pushing in the protrusion 22. In other words, the user can remove the rotating wheel 17 without removing the wheel axle 18 or other parts.

[0024] In this way, by configuring the running part of the suction body 6 as described above, it is possible to remove only the rotating wheel 17 from the suction body 6, and therefore maintenance work is facilitated because no parts other than the rotating wheel 17 need to be removed when removing hair or lint tangled in the rotating wheel 17 or wheel axle 18. This allows the user to easily remove hair or lint tangled in the rotating wheel 17 or wheel axle 18.

[0025] Furthermore, the regulating portion 23 is not limited to the above structure, but may have any structure that prevents the rotating wheel 17 from slipping out of the rotating shaft 18 and allows the rotating wheel 17 to be removed without removing any parts other than the rotating wheel 17. For example, FIGS. 9 and 10 are diagrams showing modified examples of the restricting portion 23. FIG.

[0026] Fig. 9 shows a modified example in which the protruding direction of the protrusion 22 of the restricting portion 23 is changed. Specifically, the protrusion 22 protrudes not from the wall surface of the wheel well 15 facing the tip end 20 of the wheel axle 18, but from the wall surface of the wheel well 15 on the side, that is, toward the rear of the attracting body 6. Note that Fig. 9 is a view of the attracting body 6 seen from above, and is an enlarged view of the periphery of the right half of the wheel well 15 as seen from behind. The left side, which is not shown, has the same structure as the right side. In this way, restricting portion 23 is structured so that protrusion 22 protrudes in a direction different from wheel axle 18, which makes it easier for the user to push in protrusion 22, thereby making maintenance work even easier. Furthermore, by configuring restricting portion 23 in this way, the wall surface of wheel storage chamber 15 that faces tip end 20 can be eliminated, making it even easier to push in protrusion 22 of restricting portion 23.

[0027] Figure 10 shows a modified example in which a support part 24 that rotatably supports the protrusion part 22 is provided instead of the extension part 21. Note that Figure 10 is a rear view of the suction body 6, and is an enlarged view of the periphery of the wheel well 15 on the right half as seen from behind. The left side, which is not shown, has the same structure as the right side. In this modification, when a force is applied toward the bottom side of the suction body 6, the protrusion 22 rotates downward around the support part 23 as the center of rotation. At this time, the protrusion 22 is structured to be movable to a position where a gap wider than the width of the rotating wheel 17 is formed between the protrusion 22 and the tip part 20. In this way, the restricting part 23 makes it easier for the user to push the protrusion 22 when moving it by setting the pushing direction to a direction different from the axial direction of the wheel shaft 18, thereby making maintenance work even easier.

[0028] In this way, the electric vacuum cleaner 1 of the first embodiment is provided with the restricting portion 23 that allows the rotatable wheel 17 to be removed without removing the wheel axle 18, and thus it is possible to easily carry out maintenance work to remove hair and lint that has become tangled in the wheel axle 18. Furthermore, when attaching the rotatable wheel 17, the attachment work can be easily carried out because there is no part to be removed other than the rotatable wheel 17.

[0029] Although the electric vacuum cleaner 1 in this embodiment is a canister-type vacuum cleaner in which the suction body 6 that travels over the surface to be cleaned and the vacuum cleaner body 4 that generates negative pressure are connected by the hose 2 and the extension tube 5, the above-mentioned effects can be achieved with any vacuum cleaner that travels over the surface to be cleaned using the suction body 6. For example, the suction body 6 having the structure of the present disclosure may be used in upright, stick, or handheld vacuum cleaners. [Explanation of symbols]

[0030] 1 vacuum cleaner, 2 hoses, 3 Handle part, 4 vacuum cleaner body, 5 extension tube, 6 suction body, 7 suction port, 8 joint part, 9 rotating cleaning body, 10. Handheld control unit 11 shaft portion, 12 Cleaning Department, 13 Upper case, 14 Lower case, 15 Wheel wells, 17 rotating wheels, 18 wheel axle; 19 fixed part; 20 tip, 21 Telescopic part, 22 protrusion, 23 Regulatory Department, 24 Support part,

Claims

1. An electric vacuum cleaner comprising a main body incorporating an electric blower and a suction body that sucks dust from a surface to be cleaned by negative pressure generated by the electric blower, The suction body is forming a wheel storage chamber that opens to the surface to be cleaned; The wheel well, a wheel axle that is a cylindrical shaft body, one end of which is fixed to a wall surface of the wheel well and the other end of which has a tip portion that protrudes into the wheel well; a rotating wheel that is rotatably supported by the wheel shaft that is inserted into the shaft hole and that ensures a distance between the surface to be cleaned and the bottom surface of the suction body; a restricting portion having a protrusion protruding toward the tip end portion, the protrusion being provided on the tip end portion side to restrict the rotating wheel from coming off the tip end portion, Electric vacuum cleaner.

2. The restriction portion is The protrusion is configured to be movable by applying a force in a direction away from the tip end of the wheel axle, and the protrusion moves away from the wheel axle, thereby making it possible to remove the rotating wheel from the wheel axle.

2. The vacuum cleaner according to claim 1.

3. The restriction portion is The device includes the protrusion and an expansion / contraction part such as a spring housed in the protrusion, The stretchable portion is The protrusion is attached so as to push out toward the tip end.

3. The vacuum cleaner according to claim 2.

4. The restriction portion is By applying a force to the protrusion in a direction different from the axial direction of the wheel shaft, the protrusion moves and the rotating wheel can be removed.

3. The vacuum cleaner according to claim 2.

5. The protrusion is cylindrical, The restriction portion is The cylindrical diameter of the protrusion is larger than the diameter of the wheel axle and the diameter of the axle hole of the rotating wheel.

3. The vacuum cleaner according to claim 2.

6. The wheel well is The upper portion and the rear portion of the suction body in the front-rear direction are open. The electric vacuum cleaner according to any one of claims 1 to 5.

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